5665071509 has 2 divisors, whose sum is σ = 5665071510. Its totient is φ = 5665071508.

The previous prime is 5665071491. The next prime is 5665071563. The reversal of 5665071509 is 9051705665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5610459409 + 54612100 = 74903^2 + 7390^2 .

It is a cyclic number.

It is not a de Polignac number, because 5665071509 - 2¹² = 5665067413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5665071509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5665076509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832535754 + 2832535755.

It is an arithmetic number, because the mean of its divisors is an integer number (2832535755).

Almost surely, 2^5665071509 is an apocalyptic number.

It is an amenable number.

5665071509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5665071509 is an equidigital number, since it uses as much as digits as its factorization.

5665071509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 5665071509 is about 75266.6693098612. The cubic root of 5665071509 is about 1782.6597770497.

The spelling of 5665071509 in words is "five billion, six hundred sixty-five million, seventy-one thousand, five hundred nine".